Hanger for stone-sawing machines.



No. 670,673. Patented Mar 26, mm.

G. D. HUNTER.

HANGER FOR STONE SAWING MACHINES. (Application filed Dec. 14. 1899.1 (No Model.) 2 Sheets-Sheet I,

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Patented Mar. 26, l90l. G. D. HUNTER. HANGER FOB STONE SAWING MACHINES.

(Application filed Dec 14. 1899.

2 Sl1eets-Sheet 2.

R x Q d We: a $11 Unrrnn STATES PATENT OFFICE.

GEORGE D. HUNTER, OF BLOOMINGTON, INDIANA.

HANGER FOR STONE-SAWING MACHINES.

SPECIFICATION forming part of Letters Patent No. 670,673, dated March 26, 1901.

Application filed December 14, 1899. Serial No. 740,306. (No model.)

To all whom, it may concern.-

Be it known that I, GEORGE D. HUNTER, a citizen of the United States, residing at Bloomington, in the county of Monroe and State of Indiana, have invented certain new and useful Improvements in Hangers for Stone-Sawing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to gang-hangers for stone-sawing machines, and it is embodied in the construction and arrangements of parts hereinafter described, and defined in the claims.

Heretofore in the commercial type of ganghangers the hangers have been generally composed of substantially rectangular frames having depending supporting-rods with diagonal connecting-braces. At the ends of the supporting-rods are formed boxes carrying cylindrical crank-pins, which are connected to the supporting-hangers for the gang-frame proper. In securing the diagonal braces to the depending rods it has generally been customary to form horizontal eyes at the ends of the braces and pass the rods therethrough, securing the braces in their position by suitable locleniits. In practice it has been found that such construction has a tendency to in time out or indent the hanger-rods, owing to direct engagement between the same and the braces, and to thereby cause the hanger-rods to break or to become bent. This objection has been found to be quite serious; and one of the objects of my invention is to overcome the same.

A further object of my invention is to avoid what has been found tobe a very serious objection in the wearing out of the crank-pins or wrist-pins forming the connection between the hanger-frame and the gang-frame. The pins, being arranged in close proximity to the gang-frame, are subject to the action of the water and sand as it is spattered or accidentally thrown thereinto, which soon wears the members out and destroys their usefulness. My invention is designed to overcome this by so protecting the same that the sand and water are prevented from coming in contact therewith, and in addition thereto to provide suitable means of applying a lubricant to that portion of the machine.

In the accompanyingdrawings Ihave shown a machine embodying the invention; but I desire it understood that modifications and changes can be made without departing from the nature and principle thereof.

Figure 1 is an end elevation of that portion of a stone-sawing machine which is commonly termed gang and a supporting-frame therefor, parts of the remaining portion of the machine being shown. 2 is a detail side elevation and longitudinal section of the connection between a hanger-rod and the gang crank or hanger. Fig. 3 is an elevation at right angles to that shown in Fig. 2.

In the drawings, A designates the side uprights, B the regulating-screws, and C the cross-bar, of any convenient form or construction. From the crossbar depends the hanger-frame, consisting of a vertical hangen rod D.

Secured on the lower ends of the hanger ed bores in which the threaded ends of the hanger-rods are secured. These castings are formed conveniently of flat under surfaces and are provided with vertical bolt openings or holes on opposite sides of the center. On the inner faces of the upright parts of the castings D are cast or formed laterally-extending ears cl, having perforations d therein. With these cars the diagonal bracerods E are pivotally secured by a pin passing through the ends of the brace-rods and the ears, the former being formed conveniently with bifurcated ends spanning the ears. This connection permits of a slight swinging movement between the hanger-rods and brace-rods and prevents a cutting or marring action between the hangers and braces and is a feature which has been demonstrated to be one of great utility.

F designates the gang-frame in which the gang-saws are secured. 'From the opposite ends or corners of this frame extend the hangers G, having the horizontal wrist pins g formed thereon of any convenient type. The wrist-pins g are mounted in boxes which are formed in two parts H and H, located one above the other. The upper casting II has at its opposite ends recesses h, and both castthrough from the recesses.

against the upper faces of the casting D andthe lower face of the casting H, so that when the nuts are driven down the various parts will be secured and locked together, and by the construction of the bolt it will be seen that the box composed of the castings II and H can be removed from the casting D without affecting the relative positions of the two former castings. This is often desirable in case of repair or adjustment. In the lower flange of the casting D is formed an oil-duct d ,which connects with the oil-opening formed in the center of casting H. From the duct 61 extends a supporting oil-conducting pipe 01 carrying the oil-cup d By this means a constant supply of oil is fed to the bearing.

To prevent the sand and water, with its accompanying foreign matter, from entering the bearing, I provide a boxing or cover K. This boxing is conveniently formed of sheet metal and has an open bottom and closed sides, top, and ends. The top of the box is formed with three openings arranged so as to coincide with the bolt-openings of the castings and the oil-duct openings. The top plate of the box in practice is placed between the castings D and H and the bolts are passed through the same, and when the bolts are tightened it will be observed that the box is rigidly held in place. The side walls of the box are of sufficient width to carrv the lower edge below the plane of the bearing, while the length and width of the box are such that they encompass the bearing without projecting too far. The covering, held as above described, is at all times retained in its proper position and rattling or dislocation is prevented. While I have shown the protector or box as being opened at the bottom, I desire it understood that the bottom can be practically closed, leaving an opening therein sufficient to accommodate the bracket carrying the wrist-pins. I desire it understood that the shape of the protecting covering or box can be altered when desired.

The upper castings D are fashioned substantially like those of the lower castings above described, with the exception of the oilchannel, and need not, therefore, be further referred to.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is

l. The combination with a supportingframe, of a gang-frame, hangers, castings secured to the ends of the hangers, brace-rods, means for connecting the brace-rods to the castings to permit a vertical pivotal movement of the rods, and a connection between the gang-frame and the hangers,su bstantially as described.

2. The combination with a supportingframe, castings secured to the ends of the hangers, perforated ears on the castings, diagonal brace-rods, means for connecting the brace-rods to the ears to permit a vertical pivotal movement of the rods, a gang-frame, and connections between the gang-frame and hangers, substantially as described.

3. The combination with a gang, of a bracket supporting the same, a wrist-pin on the bracket, a bearing-box for the wrist-pin com prising two members, means for securing the members together, a hanger-casting, and means independent of the bearing-securing means for connecting the hanger-casting with the bearing, substantially as described.

4. The combination with a gang-bracket having wrist-pins thereon, of a divided journal-box, the upper member of which has recesses therein, a bolt passing through said members having shoulders fitted in said recesses, nuts on the lower ends of the bolt, a hanger-casting through which the upper end of the bolt passes and nuts on the upper ends of the bolts for securing the hanger-casting to the bearing, substantially as described.

5. In combination substantially as described, a hanger-rod, a casting at the lower end thereof, laterally-extending perforated ears on the casting, a bearing, a housing interposed between the casting and bearing, and means independent of the hanger-rod adapted to engage the perforated ears of the casting for securing the housing in place, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE D. HUNTER.

Witnesses:

J. W. OHARRow, O. O. PORTER. 

